Lubricating apparatus



June 21, 1927.

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Patented June 1,927.

uurrn STATES OSCAR U'LYSSIES ZERK, F CLEVELAND, OHIO, .ASS IGNOR, BY MESNE ASSIGNMENTS, TO

.THE BASSICK MANUFACTURING COMPANY.

LUBBICA'IING APPARATUS.

Original application filed November 21, 1922, Serial No. 602,465, Divided and this application filed January 2, 1924.

My invention relates to improvements in lubricating apparatus.

In the lubrication of moving elements, and

. especially in automobiles, it has become uniform practice to provide the elements with inlet nipples, to which a grease or oil gun is detachably secured. Generally, the gun is provided with a flexible outlet tube having at its end a coupling which is adjusted manually and locked against the inlet nipple M to provide a tight jointtherebetween. After the user has locked the coupling by hand,

he then grasps the gunbarrel with one hand" and with the other hand screws the plunger down, forcing the'grease through the con duit.

These several operations each require considerable time, "are often performed from awkward positions, and further, in handling the coupling, from which grease leaks.

durin' the pressure operation and especially after being removed, the users hands become. greasy and dirtycausin the gun and the coupling to slip when andled, and necessitatingadditional time in which to perform the attaching and detaching operations. Y i

The main object-of my invention resides in overcoming these objections by so constructing a pistol and a nipple, that thepis- 'tol can be held'in one hand and placed in direct osculatory leakproof contact with the -nipple,-and while so held will-inject lubricant into the nipple, when direct pressure is applied thereto.

Another object-ofmy invention resides in providing a pistol with a metal connector which is so shaped that it forms a leakproof direct metal to metal contact with a nipple.

Another object of m invention is to construct' the contacting aces of a nipple and a connector, so that one provides a'circular edge which fits against a convexly spherical surface Ff the other, to provide a leakproof pressure maintained contact therebetween, in which, when pressed together in varying angular relations the -circular edge contacting with the convexly spherical surface en closes the passage providing. a leakproof connection.

Another object of my invention is to pro- Serial No. 683,972.

facewith a centrally disposed exit openmg together with a lubricant receivin nipple having a face provided with aninlet opening positioned, preferably, centrally thereof, the one face having a peripheral circular edge and the other face having a convex spherically shaped surface, .and

means adapted to eject lubricant under pressure from the exit opening, the nozzle contact face being adapted to be pressed against that of the nipple by the o erator pressing the'gun toward the nipple From any one of a number of different angular directions, the manual pressure so exerted being adapted to cause the ejection of lubricantfrom the nozzle into the nipple and at the same time to provide' suflicient pressure to maintain a tight-lubricant proof contact bep ween the circular edge of the'onecontact ace contact face which engages it.

Theinvention further resides and consists 1n the arrangement and combination of parts hereinafter described and claimed, reference being had to the accompanying drawings wherein Fig. 1 is a medial vertical longitudinal sectional view of an embodiment of my invention'. v

Fig. 2 is asimilar view of the nozzle end in contact with the nipple and at an angle to the axis of the nipple. Fig. 3 is a side elevational view of the the spherical surface of the other valve between the nozzle and 'the lubricant ig. 7 is a side elevational v1ew of the modified nipple shown in Fig. 6.

Referring to the drawing, in 'which like characters represent like parts, the lubricant containing receptacle may be formed in various well known ways. In my preferred embodiment, however, the receptacle consists of a short cylindrical barrel 10, one end of which is open and threaded exteriorly to receive the short closure cap 11, and the other end of which terminates in a restricted lubricant exit 12, to which a rigid cylindri-' cal lubricant outlet nozzle is rigidly secured by Welding or other' suitable means. .The

1 of the barrel.

receptacle may be filled with lubricant when the cap 11 is unscrewed and removed from the open end of the barrel in the usual mam.

ner.

v The. rigid nozzle. extends centrally and longitudinally from the outlet end of the barrel, and is rovided with a central passage 14 extendlng therethrough which is in communication with the lubricantexit 12, The inner end of the passage is restricted bya circular shoulder 15, the inner wall of which curves inwardly, and upwardly, forming a smooth junction with the curved inner wall of the lubricant exit 12, and providing a knife edge'valve seat 16. The continuous curve thus formed within the receptacle, between the barrel and the valve seat, eliminates any corners or edges upon which lubricant can accumulate and permits'thev compressed lubricantto flush the valve seat of dirt and grit, insuring leakproof closure. A valve member ex-. tends through the valve seat within the passage in the nozzle, and consists preferably,

of a cylindrical and tapered head 17, which terminates ina stem 18. The stem is en-.

largedat its lower end and is threaded exteriorly. A longitudinally extending slot 19 is formed in the valve stem and' its threaded end, and curves inwardly from the wall of the stem and substantially centrally through the threaded end thereof. The

- tapered portion of the head of the) valve cular knife edge of the valve'seat.

niember extends into and forms a closure for the restricted portion. of the passage in the nozzle, when it is seated against the cir- A lubricant dispensing connector 21 having a passage extending. axially therethrough is mounted to be reciprocated within the.

outer cylindrical end of the nozzle, and forms the contacting portion of the nozzle which engages with the nipple 20 which is attached to a bearing element 22 in any suitable manner. The outer end of the connector projecting from the nozzle portion 13 is rounded to 'r'ovide a convexly spheri-' cal, ball-shaped ace 23 which is provided with a central opening 24 and is of smaller diameter than the ma n portion of the connector. The end of the connector which slides within the hollow nozzle element ,13

.is threaded internally and receives the threaded end of the valve stem forming an integral unit therewith.

. A lubricant proof leather washer 26 pro 'vided with a central aperture, through which the valve stem extends, is seated upon the inner end of the connector. -A steel washer 27, provided with a 'central aperture through which the valve stem extends,

washer and provide. a tight fit thereof againstthe wall of the nozzle passage,- to

vprevent lubricant from working, down between the outer wall of the connector and the nozzle. When the valve is open the lubricant under 'pressure fills the passage in which the spring lies, and passes into the space between the washers and the valve member, and then, into the slot 19 which overlies the passage 24 through the connector.

The cap 11 is provided with an internally apertured threaded bearing nipple 29, which receives the threaded piston rod 30. The

outer end 31, of the piston rod is bent at an obtuse. angle, and knurled longitudinally to provide a handle for-the pistol, and an aperture gripis driven thereon. This angular handle provides a grip which can be firmly grasped in one hand, and further, will allow the user to exert a maximum direct pressure against the pistol while so held.

The 'inner end of the piston rod terminates '.1 n a cylindrical shank upon which the apertured leak roof piston 34 is reciprocally secured. washer 35 extends below the piston upon the shank 33, and a Washer 36 extends above the piston upon the shank 33, At the upper" end of the shank is rigidly secured a stop 37, which with the upset end 38 of the piston rod, secures the piston upon theshank, and allows a limitedsliding movement thereof.

Suitable resilient means are provided between the stop 37 on the piston rod and the reciprocable piston but in my preferred embodiment, I use a stiff concavo-convex, resilient sheet metal washer 39, which is apertured centrally to fit upon the shank. It will be understood that, while I have illustrated only one such washer, several superposed washers ofthis type could be used to the same purpose.- Normally, the resilient washer ,re-

tains the piston at the outer end of the shank,

but the concavo-convex metal washer will flatten out as the. piston slides up upon the shank, during each inward manual operation of the piston rod,.when the outlet valve is closed. when the valve is opened the com-.

pressed spring will resume its normal positron and move the piston rod.

piston to the end of the i .In pressure operatedguns lubricant is forced from a container under high pressure,

and it is the present practice mechanically to securethe outlet of the gun to the nipple- 5 to prevent leakage, when placed in- -operative contact. .It is also the practice to provide a gasket made of leather, or similar material, between the contacting portions of thegun and the nipple to prevent lubricant from leaking from the connection. In the several embodiments of my invention in contradistinction to the above practices, I provide, generally, a'nipple having .a metal in let contact face, and a metal connector forming a part of the nozzle, havingan outlet contact face which is pressed against the nipple face forming a' leakproof contact.

The nipple 20 is rovided with an inlet face 40 which is providedwith a passage 42 extending through the central portionthereof and of sufiicient diameter to receive a,

portion of the ball-shaped nozzle end 23, the edge 41 of the wall surrounding the passage being circular. Aportion of the con-' tact face of the nozzle connector will extend into the opening 42 and engage the circular sa -s41 of the nipple face, when pressed thereagainst, to provide a leakproof connection and enclose the passage 23 of the nozzle within thepassage 42 of the nipple. The

surface of the nozzle will allow leakproof connection to be made therebetween when 'thenozzle is held at various angles to the 36 nipple, one'angular position being shown in Fig. 2, and swiveling thereagainst, will permit the position of the un to be changed with respect to the nipp e after contact is made. The gun can be held in operative 'leakproof connection with the nipple in ,any

' relation thereto in which the passage23 of the nozzle remains covered by the circular edge of the nipple.

Pressure of the gun against the n1pp1e when the contact faces are in engagement will move the connector 21 inwardly unseating the valve 17, and the prepressure. created against the lubricant by the spring pressed piston will automatically force the lubricant through the nozzle, as previously described, and into the nipple, from which it passes to the element The lubricant can" also be ejected from the connector when the contact faces are in engagementpand the valve opened, by screwing c5 having an inserted tip 44 which extends at circular edgeiof the nipple and the spherical to be lubricated.

an angle to the longitudinalaxis of the nipple .and is' designed for use especially in places whichare hard toreach while exertlng pressure on thegun. This element is press fitted withthe nipple body and has a contact face, of the character described, extending at an'angleto the longitudinal axis of the nipple body. This angular contact face together with the construction of the two faces'which permits a plurality of operative' leakproof relations of the gun with the nipple is decidedly advantageous in lubricating elements located in inaccessible places. The nipples are provided with a springpressed valve 45 which normally closes; the inlet passage 42, the pressure of the lubricant from the gun opening the valve when lubricating.

This case is a division as to the subject matter-claimed herein, of an earlier application, Serial Number 602,465, filed November 21, 1 922.

Having thus described my invention in ,a number of embodiments, I- am aware that numerous and extensive departures maybe made from the embodiments herein illustrated, described and referred to, but without departingjfrom the spirit of my invention,

I claim 1. In a lubricating apparatus, the combination with a lubricant receivin nipple of a gun for supplying lubricant un er pressure theretg, said nipple having an inlet .face with a. circular. passage therethrough providing a surrounding contact edge, said gun having a nozzle element provided with a convexly spherical contact face partially entering the passage in said nipple and engaging the surrounding circular edge when pressed thereagainst, thereby forming a sealed, lubricant conducting connection between said gun and said nipple.

2. In a lubricating apparatus, the combination with a lubricant receiving nipple of a gun for supplying lubricant under pressure' thereto, said nipple having an inlet face with a passage therethrough .and an annular wedge shaped edge surrounding said passage, said .gun having a nozzle element provided with a discharge passage surrounded by a convexsphericalcontact surface for engaging the circular edge -of the nipple face, when pressed thereagainst from any one of a plurality of different .directions, to make a sealed lubricant conducting connection between said gun and said nipple. V

3. The combinationwith'a lubricant re-- ceiving nipple having an inlet opening surportion for contacting with said circular edge to make sealed contact with said nipple plying lubricant under pressure fto said. -nipple,--said gun having a" nozzle element from any one of a plurality of difi'erent angular positions."

4. The combination with a lubricant re ceiving nipple having a substantially .'flat outer'cnd provided with an inlet opening, said inlet opening having a circular'edge,

. of a gun for supplying lubricant under pressure to said nipple, said gun having a:

nozzle element terminating in a convex,

spherical contact portion for contacting with said circular edge to make sealed contact with said nipple. c

5, A lubricating device comprising an incompressible lubricant-distributing nozzle having a spherical terminal and also having a discharge channel for the lubricant; combined with areceiving member to be lubricated having a circularedge with which .said spherical terminal forms a tight joint,

regardless of the inclination of the nozzle relative thereto, when the lubricating device is thrust bodily by hand against said membgr so as to press the said terminal upon said e ge; 7

6; The combination with a lubricant re- 'ceiving nipple having an inlet opening surrounded-by a contact face, of a gun for supprovided with a contact'face, one of said contact faces havinga circular edge and the other of said contact faces-ihaving a convex spherical portion for contacting with the 'said circular edge to make-- sealed contact jferent angular positions.

therewith from any one 'ofa plurality ofdif- 7. Ina lubrlcating apparatus, the combination with a lubricant receiving nipple,. of .a gun for supplying lubricant underpressure thereto, said nipple having a passage therethrough surrounded by a contact face, said gun having a nozzle element'pro vided with a discharge passagesurrounded by a contact face, one of said contact faces having an annular wedge-shaped ed eand the other face having a convex tsp erical contact surface .for' engaging the circular [edge of the first named face when pressed 'thereagainst from' any one of a plurality of different directions to make a sealed lubri- .-cant conducting connection between said gun and said nipple.

Intestimony whereof I hereunto aflix my signature this 29th da of December 1923.

- 1 OSCAR LYSSES zEk 

